Polycystic Ovary Syndrome (PCOS) is a common (but not normal) hormonal condition that affects how your ovaries function, making it difficult to conceive. PCOS is one of the leading causes of infertility, affecting 1 in 8 women. 

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Polyendocrine Metabolic Ovarian Syndrome (PMOS) is the new name for PCOS. It better explains that the condition is mainly a metabolic issue affecting ovulation and hormone balance, not just a problem with the ovaries.  PMOS sheds light on root cause issues, not just cysts on the ovaries.